Commit Graph

767201 Commits

Author SHA1 Message Date
Ard Biesheuvel 2e6eb40ca5 efi/x86: Fix incorrect invocation of PciIo->Attributes()
The following commit:

  2c3625cb9f ("efi/x86: Fold __setup_efi_pci32() and __setup_efi_pci64() into one function")

... merged the two versions of __setup_efi_pciXX(), without taking into
account that the 32-bit version used a rather dodgy trick to pass an
immediate 0 constant as argument for a uint64_t parameter.

The issue is caused by the fact that on x86, UEFI protocol method calls
are redirected via struct efi_config::call(), which is a variadic function,
and so the compiler has to infer the types of the parameters from the
arguments rather than from the prototype.

As the 32-bit x86 calling convention passes arguments via the stack,
passing the unqualified constant 0 twice is the same as passing 0ULL,
which is why the 32-bit code in __setup_efi_pci32() contained the
following call:

  status = efi_early->call(pci->attributes, pci,
                           EfiPciIoAttributeOperationGet, 0, 0,
                           &attributes);

to invoke this UEFI protocol method:

  typedef
  EFI_STATUS
  (EFIAPI *EFI_PCI_IO_PROTOCOL_ATTRIBUTES) (
    IN  EFI_PCI_IO_PROTOCOL                     *This,
    IN  EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION Operation,
    IN  UINT64                                  Attributes,
    OUT UINT64                                  *Result OPTIONAL
    );

After the merge, we inadvertently ended up with this version for both
32-bit and 64-bit builds, breaking the latter.

So replace the two zeroes with the explicitly typed constant 0ULL,
which works as expected on both 32-bit and 64-bit builds.

Wilfried tested the 64-bit build, and I checked the generated assembly
of a 32-bit build with and without this patch, and they are identical.

Reported-by: Wilfried Klaebe <linux-kernel@lebenslange-mailadresse.de>
Tested-by: Wilfried Klaebe <linux-kernel@lebenslange-mailadresse.de>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: hdegoede@redhat.com
Cc: linux-efi@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-06-24 09:05:58 +02:00
Aleksander Morgado e7e197edd0 qmi_wwan: add support for the Dell Wireless 5821e module
This module exposes two USB configurations: a QMI+AT capable setup on
USB config #1 and a MBIM capable setup on USB config #2.

By default the kernel will choose the MBIM capable configuration as
long as the cdc_mbim driver is available. This patch adds support for
the QMI port in the secondary configuration.

Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-24 11:44:28 +09:00
Ganesh Goudar 5ce36338a3 cxgb4: when disabling dcb set txq dcb priority to 0
When we are disabling DCB, store "0" in txq->dcb_prio
since that's used for future TX Work Request "OVLAN_IDX"
values. Setting non zero priority upon disabling DCB
would halt the traffic.

Reported-by: AMG Zollner Robert <robert@cloudmedia.eu>
CC: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-24 11:43:16 +09:00
Geert Uytterhoeven 0fff900184 ARM: Always build secure_cntvoff.S on ARM V7 to fix shmobile !SMP build
If CONFIG_SMP=n, building a kernel for R-Car Gen2 fails with:

    arch/arm/mach-shmobile/setup-rcar-gen2.o: In function `rcar_gen2_timer_init':
    setup-rcar-gen2.c:(.init.text+0x30): undefined reference to `secure_cntvoff_init'

Indeed, on R-Car Gen2 SoCs, secure_cntvoff_init() is not only needed for
secondary CPUs, but also for the boot CPU.  This is most visible on SoCs
with Cortex A7 cores (e.g. R-Car E2, cfr. commit 9ce3fa6816 ("ARM:
shmobile: rcar-gen2: Add CA7 arch_timer initialization for r8a7794")),
but Cortex A15 is affected, too.

Fix this by always providing secure_cntvoff_init() when building for ARM
V7.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 7c607944bc ("ARM: smp: Add initialization of CNTVOFF")
Fixes: cad160ed0a ("ARM: shmobile: Convert file to use cntvoff")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Olof Johansson <olof@lixom.net>
2018-06-23 18:26:48 -07:00
Linus Torvalds 77072ca59f for-linus-20180623
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Merge tag 'for-linus-20180623' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - Further timeout fixes. We aren't quite there yet, so expect another
   round of fixes for that to completely close some of the IRQ vs
   completion races. (Christoph/Bart)

 - Set of NVMe fixes from the usual suspects, mostly error handling

 - Two off-by-one fixes (Dan)

 - Another bdi race fix (Jan)

 - Fix nbd reconfigure with NBD_DISCONNECT_ON_CLOSE (Doron)

* tag 'for-linus-20180623' of git://git.kernel.dk/linux-block:
  blk-mq: Fix timeout handling in case the timeout handler returns BLK_EH_DONE
  bdi: Fix another oops in wb_workfn()
  lightnvm: Remove depends on HAS_DMA in case of platform dependency
  nvme-pci: limit max IO size and segments to avoid high order allocations
  nvme-pci: move nvme_kill_queues to nvme_remove_dead_ctrl
  nvme-fc: release io queues to allow fast fail
  nbd: Add the nbd NBD_DISCONNECT_ON_CLOSE config flag.
  block: sed-opal: Fix a couple off by one bugs
  blk-mq-debugfs: Off by one in blk_mq_rq_state_name()
  nvmet: reset keep alive timer in controller enable
  nvme-rdma: don't override opts->queue_size
  nvme-rdma: Fix command completion race at error recovery
  nvme-rdma: fix possible free of a non-allocated async event buffer
  nvme-rdma: fix possible double free condition when failing to create a controller
  Revert "block: Add warning for bi_next not NULL in bio_endio()"
  block: fix timeout changes for legacy request drivers
2018-06-24 06:33:54 +08:00
Linus Torvalds 2dd3f7c904 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:

 - Fix use after free in chtls

 - Fix RBP breakage in sha3

 - Fix use after free in hwrng_unregister

 - Fix overread in morus640

 - Move sleep out of kernel_neon in arm64/aes-blk

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  hwrng: core - Always drop the RNG in hwrng_unregister()
  crypto: morus640 - Fix out-of-bounds access
  crypto: don't optimize keccakf()
  crypto: arm64/aes-blk - fix and move skcipher_walk_done out of kernel_neon_begin, _end
  crypto: chtls - use after free in chtls_pt_recvmsg()
2018-06-24 06:31:54 +08:00
Linus Torvalds b13fbe7713 linux-kselftest-4.18-rc2
This Kselftest fixes update for Linux 4.18-rc2:
 
 - Fixes new sparc64 adi driver test compile errors on non-sparc systems.
 - Fixes config fragment for sync framework for improved test coverage.
 - Fixes several tests to return correct Kselftest skip code.
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Merge tag 'linux-kselftest-4.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fixes from Shuah Khan:

 - fix new sparc64 adi driver test compile errors on non-sparc systems

 - fix config fragment for sync framework for improved test coverage

 - fix several tests to return correct Kselftest skip code

* tag 'linux-kselftest-4.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: sparc64: Add missing SPDX License Identifiers
  selftests: sparc64: delete RUN_TESTS and EMIT_TESTS overrides
  selftests: sparc64: Fix to do nothing on non-sparc64
  selftests: sync: add config fragment for testing sync framework
  selftests: vm: return Kselftest Skip code for skipped tests
  selftests: zram: return Kselftest Skip code for skipped tests
  selftests: user: return Kselftest Skip code for skipped tests
  selftests: sysctl: return Kselftest Skip code for skipped tests
  selftests: static_keys: return Kselftest Skip code for skipped tests
  selftests: pstore: return Kselftest Skip code for skipped tests
2018-06-24 06:26:19 +08:00
Linus Torvalds 81f9c4e417 This contains a few fixes and a clean up.
- A bad merge caused an "endif" to go in the wrong place in
      scripts/Makefile.build
  - Softirq tracing fix for tracing that corrupts lockdep and causes a false
      splat
  - Histogram documentation typo fixes
  - Fix a bad memory reference when passing in no filter to the filter code
  - Simplify code by using the swap macro instead of open coding the swap
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Merge tag 'trace-v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "This contains a few fixes and a clean up.

   - a bad merge caused an "endif" to go in the wrong place in
     scripts/Makefile.build

   - softirq tracing fix for tracing that corrupts lockdep and causes a
     false splat

   - histogram documentation typo fixes

   - fix a bad memory reference when passing in no filter to the filter
     code

   - simplify code by using the swap macro instead of open coding the
     swap"

* tag 'trace-v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Fix SKIP_STACK_VALIDATION=1 build due to bad merge with -mrecord-mcount
  tracing: Fix some errors in histogram documentation
  tracing: Use swap macro in update_max_tr
  softirq: Reorder trace_softirqs_on to prevent lockdep splat
  tracing: Check for no filter when processing event filters
2018-06-24 06:23:28 +08:00
Olof Johansson f377ad0369 ARM: dts: socfpga: fix NAND support
- NAND should be using nand_x_clk, not nand_clk
 - fix NAND node compatible for Cyclone5 and Arria10
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Merge tag 'socfpga_nand_fix_v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux into fixes

ARM: dts: socfpga: fix NAND support
- NAND should be using nand_x_clk, not nand_clk
- fix NAND node compatible for Cyclone5 and Arria10

* tag 'socfpga_nand_fix_v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
  ARM: dts: socfpga: Fix NAND controller node compatible for Arria10
  ARM: dts: socfpga: Fix NAND controller node compatible
  ARM: dts: socfpga: Fix NAND controller clock supply

Signed-off-by: Olof Johansson <olof@lixom.net>
2018-06-23 15:14:40 -07:00
Olof Johansson fd7d58f0db ARM: multi_v7_defconfig: renormalize based on recent additions
The defconfig has drifted over time, as Kconfig entries have changed order
or default values. Several maintainers ended up running 'savedefconfig'
themselves which caused a cascade of conflicts. Let's do it once and
for all in our tree before -rc2 instead.

Signed-off-by: Olof Johansson <olof@lixom.net>
2018-06-23 10:32:58 -07:00
Olof Johansson c432c08805 arm64: defconfig: renormalize based on recent additions
The defconfig has drifted over time, as Kconfig entries have changed order
or default values. Several maintainers ended up running 'savedefconfig'
themselves which caused a cascade of conflicts. Let's do it once and
for all in our tree before -rc2 instead.

Signed-off-by: Olof Johansson <olof@lixom.net>
2018-06-23 10:24:25 -07:00
Olof Johansson fab9715bb8 Qualcomm Fixes for v4.18-rc1
* Fix coresight graph on msm8916
 * Disable uart0 on db820c by default
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Merge tag 'qcom-fixes-for-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into fixes

Qualcomm Fixes for v4.18-rc1

* Fix coresight graph on msm8916
* Disable uart0 on db820c by default

* tag 'qcom-fixes-for-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux:
  arm64: dts: msm8916: fix Coresight ETF graph connections
  arm64: dts: apq8096-db820c: disable uart0 by default

Signed-off-by: Olof Johansson <olof@lixom.net>
2018-06-23 10:22:43 -07:00
Olof Johansson 526e43e212 This pull request contains Broadcom ARM64-based SoCs MAINTAINERS file
fixes for 4.18, please pull the following:
 
 - Florian fixes the entry for the Northstar2 SoCs which was somehow lost
   during a directory move. He also adds an entry for the Stingray SoCs
   which was missing from the day files were added
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Merge tag 'arm-soc/for-4.18/maintainers-arm64-fixes' of https://github.com/Broadcom/stblinux into fixes

This pull request contains Broadcom ARM64-based SoCs MAINTAINERS file
fixes for 4.18, please pull the following:

- Florian fixes the entry for the Northstar2 SoCs which was somehow lost
  during a directory move. He also adds an entry for the Stingray SoCs
  which was missing from the day files were added

* tag 'arm-soc/for-4.18/maintainers-arm64-fixes' of https://github.com/Broadcom/stblinux:
  MAINTAINERS: Update Broadcom iProc entry with Stingray
  MAINAINTERS: Corrected Broadcom Northstar2 entry

Signed-off-by: Olof Johansson <olof@lixom.net>
2018-06-23 10:21:45 -07:00
Olof Johansson a6623f5f31 This pull request contains Broadcom ARM64-based SoCs Device Tree fixes
for 4.18, please pull the following:
 
 - Scott fixes both the bcm958742k and bcm958742t reference boards to
   have the correct eMMC voltage specified
 
 - Ray fixes the I2C and PCIe Device Tree nodes interrupt specifiers for
   Northstar 2 and Stingray SoCs.
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Merge tag 'arm-soc/for-4.18/devicetree-arm64-fixes' of https://github.com/Broadcom/stblinux into fixes

This pull request contains Broadcom ARM64-based SoCs Device Tree fixes
for 4.18, please pull the following:

- Scott fixes both the bcm958742k and bcm958742t reference boards to
  have the correct eMMC voltage specified

- Ray fixes the I2C and PCIe Device Tree nodes interrupt specifiers for
  Northstar 2 and Stingray SoCs.

* tag 'arm-soc/for-4.18/devicetree-arm64-fixes' of https://github.com/Broadcom/stblinux:
  arm64: dts: Stingray: Fix I2C controller interrupt type
  arm64: dts: ns2: Fix PCIe controller interrupt type
  arm64: dts: ns2: Fix I2C controller interrupt type
  arm64: dts: specify 1.8V EMMC capabilities for bcm958742t
  arm64: dts: specify 1.8V EMMC capabilities for bcm958742k

Signed-off-by: Olof Johansson <olof@lixom.net>
2018-06-23 10:20:30 -07:00
Olof Johansson 0988e8e2e1 This pull request contains Broadcom ARM-based SoCs Device Tree fixes for
4.18, please pull the following:
 
 - Ray fixes the I2C and PCIe interrupt types for the Cygnus SoC
 
 - Florian fixes the I2C and PCIe interrupts for the Northstar
   (BCM5301x), Northstar Plus and Hurricane 2 SoCs
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Merge tag 'arm-soc/for-4.18/devicetree-fixes' of https://github.com/Broadcom/stblinux into fixes

This pull request contains Broadcom ARM-based SoCs Device Tree fixes for
4.18, please pull the following:

- Ray fixes the I2C and PCIe interrupt types for the Cygnus SoC

- Florian fixes the I2C and PCIe interrupts for the Northstar
  (BCM5301x), Northstar Plus and Hurricane 2 SoCs

* tag 'arm-soc/for-4.18/devicetree-fixes' of https://github.com/Broadcom/stblinux:
  ARM: dts: Cygnus: Fix PCIe controller interrupt type
  ARM: dts: Cygnus: Fix I2C controller interrupt type
  ARM: dts: BCM5301x: Fix i2c controller interrupt type
  ARM: dts: HR2: Fix interrupt types for i2c and PCIe
  ARM: dts: NSP: Fix PCIe controllers interrupt types
  ARM: dts: NSP: Fix i2c controller interrupt type

Signed-off-by: Olof Johansson <olof@lixom.net>
2018-06-23 10:18:39 -07:00
Olof Johansson 652caf4ab1 i.MX fixes for 4.18:
- Fix i.MX6SX PCIe MSI interrupt number, so that MSI IRQs can be
    properly propagated to the upstream interrupt controller.
  - Fix GPCv2 MIPI/PCIe/USB_HSIC's PGC offset.  The values in Reference
    Manual are incorrect.
  - Correct SDMA setting for i.MX6Q SPI5 device to fix the issue, that
    the SPI controller RX FIFO was not empty after a DMA transfer, and
    the driver gets stuck in the next PIO transfer when reading one word
    more than expected.
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Merge tag 'imx-fixes-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes

i.MX fixes for 4.18:
 - Fix i.MX6SX PCIe MSI interrupt number, so that MSI IRQs can be
   properly propagated to the upstream interrupt controller.
 - Fix GPCv2 MIPI/PCIe/USB_HSIC's PGC offset.  The values in Reference
   Manual are incorrect.
 - Correct SDMA setting for i.MX6Q SPI5 device to fix the issue, that
   the SPI controller RX FIFO was not empty after a DMA transfer, and
   the driver gets stuck in the next PIO transfer when reading one word
   more than expected.

* tag 'imx-fixes-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  ARM: dts: imx6sx: fix irq for pcie bridge
  soc: imx: gpcv2: correct PGC offset
  ARM: dts: imx6q: Use correct SDMA script for SPI5 core

Signed-off-by: Olof Johansson <olof@lixom.net>
2018-06-23 10:17:38 -07:00
Olof Johansson cb04a79445 Renesas ARM Based SoC Fixes for v4.18
Make PM domain initialization more robust in Renesas R-Car SYSC driver.
 This resolves a regression due to re-parenting of PM domains by
 086b399965 ("soc: renesas: r8a77990-sysc: Add workaround for 3DG-{A,B}").
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Merge tag 'renesas-fixes-for-v4.18' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes

Renesas ARM Based SoC Fixes for v4.18

Make PM domain initialization more robust in Renesas R-Car SYSC driver.
This resolves a regression due to re-parenting of PM domains by
086b399965 ("soc: renesas: r8a77990-sysc: Add workaround for 3DG-{A,B}").

* tag 'renesas-fixes-for-v4.18' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  soc: renesas: rcar-sysc: Make PM domain initialization more robust

Signed-off-by: Olof Johansson <olof@lixom.net>
2018-06-23 10:16:55 -07:00
Olof Johansson a514338b94 mvebu fixes for 4.17 (part 2)
- Use correct size for ICU nodes (irq controller) on Armada 7K/8K
  - Fix "#cooling-cells" property's name on Synology DS116 (Armada 385)
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Merge tag 'mvebu-fixes-4.17-2' of git://git.infradead.org/linux-mvebu into fixes

mvebu fixes for 4.17 (part 2)

 - Use correct size for ICU nodes (irq controller) on Armada 7K/8K
 - Fix "#cooling-cells" property's name on Synology DS116 (Armada 385)

* tag 'mvebu-fixes-4.17-2' of git://git.infradead.org/linux-mvebu:
  arm: dts: armada: Fix "#cooling-cells" property's name
  arm64: dts: marvell: fix CP110 ICU node size

Signed-off-by: Olof Johansson <olof@lixom.net>
2018-06-23 10:14:08 -07:00
Bart Van Assche f5e350f021 blk-mq: Fix timeout handling in case the timeout handler returns BLK_EH_DONE
Make sure that RQF_TIMED_OUT is cleared when a request is reused
after a block driver timeout handler has returned BLK_EH_DONE.

Fixes: da66126739 ("blk-mq: don't time out requests again that are in the timeout handler")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jianchao Wang <jianchao.w.wang@oracle.com>
Cc: Andrew Randrianasulu <randrianasulu@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-06-23 10:25:45 -06:00
Linus Torvalds 5e2204832b powerpc fixes for 4.18 #2
- A fix for hugetlb with 4K pages, broken by our recent changes for split PMD PTL.
 
  - Set the correct assembler machine type on e500mc, needed since binutils 2.26
    introduced two forms for the "wait" instruction.
 
  - A fix for potential missed TLB flushes with MADV_[FREE|DONTNEED] etc. and THP
    on Power9 Radix.
 
  - Three fixes to try and make our panic handling more robust by hard disabling
    interrupts, and not marking stopped CPUs as offline because they haven't been
    properly offlined.
 
  - Three other minor fixes.
 
 Thanks to:
   Aneesh Kumar K.V, Michael Jeanson, Nicholas Piggin.
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Merge tag 'powerpc-4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - a fix for hugetlb with 4K pages, broken by our recent changes for
   split PMD PTL.

 - set the correct assembler machine type on e500mc, needed since
   binutils 2.26 introduced two forms for the "wait" instruction.

 - a fix for potential missed TLB flushes with MADV_[FREE|DONTNEED] etc.
   and THP on Power9 Radix.

 - three fixes to try and make our panic handling more robust by hard
   disabling interrupts, and not marking stopped CPUs as offline because
   they haven't been properly offlined.

 - three other minor fixes.

Thanks to: Aneesh Kumar K.V, Michael Jeanson, Nicholas Piggin.

* tag 'powerpc-4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/mm/hash/4k: Free hugetlb page table caches correctly.
  powerpc/64s/radix: Fix radix_kvm_prefetch_workaround paca access of not possible CPU
  powerpc/64s: Fix build failures with CONFIG_NMI_IPI=n
  powerpc/64: hard disable irqs on the panic()ing CPU
  powerpc: smp_send_stop do not offline stopped CPUs
  powerpc/64: hard disable irqs in panic_smp_self_stop
  powerpc/64s: Fix DT CPU features Power9 DD2.1 logic
  powerpc/64s/radix: Fix MADV_[FREE|DONTNEED] TLB flush miss problem with THP
  powerpc/e500mc: Set assembler machine type to e500mc
2018-06-23 21:13:05 +08:00
Linus Torvalds 7ab366e442 arm64 fixes:
- Zero buffers allocated with FORCE_CONTIGUOUS explicitly until the CMA
   code honours __GFP_ZERO
 
 - notrace annotation for secondary_start_kernel()
 
 - Use early_param() instead of __setup() for "kpti=" as it is needed for
   the cpufeature callback remapping swapper to non-global mappings
 
 - Ensure writes to swapper are ordered wrt subsequent cache maintenance
   in the kpti non-global remapping code
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:

 - clear buffers allocated with FORCE_CONTIGUOUS explicitly until the
   CMA code honours __GFP_ZERO

 - notrace annotation for secondary_start_kernel()

 - use early_param() instead of __setup() for "kpti=" as it is needed
   for the cpufeature callback remapping swapper to non-global mappings

 - ensure writes to swapper are ordered wrt subsequent cache maintenance
   in the kpti non-global remapping code

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mm: Ensure writes to swapper are ordered wrt subsequent cache maintenance
  arm64: kpti: Use early_param for kpti= command-line option
  arm64: make secondary_start_kernel() notrace
  arm64: dma-mapping: clear buffers allocated with FORCE_CONTIGUOUS flag
2018-06-23 21:07:43 +08:00
Linus Torvalds 8b88ed3c3e KVM fixes for 4.18-rc2
ARM:
  - Lazy FPSIMD switching fixes
  - Really disable compat ioctls on architectures that don't want it
  - Disable compat on arm64 (it was never implemented...)
  - Rely on architectural requirements for GICV on GICv3
  - Detect bad alignments in unmap_stage2_range
 
 x86:
  - Add nested VM entry checks to avoid broken error recovery path
  - Minor documentation fix
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Radim Krčmář:
 "ARM:
   - Lazy FPSIMD switching fixes
   - Really disable compat ioctls on architectures that don't want it
   - Disable compat on arm64 (it was never implemented...)
   - Rely on architectural requirements for GICV on GICv3
   - Detect bad alignments in unmap_stage2_range

  x86:
   - Add nested VM entry checks to avoid broken error recovery path
   - Minor documentation fix"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: fix KVM_CAP_HYPERV_TLBFLUSH paragraph number
  kvm: vmx: Nested VM-entry prereqs for event inj.
  KVM: arm64: Prevent KVM_COMPAT from being selected
  KVM: Enforce error in ioctl for compat tasks when !KVM_COMPAT
  KVM: arm/arm64: add WARN_ON if size is not PAGE_SIZE aligned in unmap_stage2_range
  KVM: arm64: Avoid mistaken attempts to save SVE state for vcpus
  KVM: arm64/sve: Fix SVE trap restoration for non-current tasks
  KVM: arm64: Don't mask softirq with IRQs disabled in vcpu_put()
  arm64: Introduce sysreg_clear_set()
  KVM: arm/arm64: Drop resource size check for GICV window
2018-06-23 20:59:00 +08:00
Linus Torvalds 4ab59fcfd5 xen: fixes for 4.18-rc2
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Merge tag 'for-linus-4.18-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:
 "This contains the following fixes/cleanups:

   - the removal of a BUG_ON() which wasn't necessary and which could
     trigger now due to a recent change

   - a correction of a long standing bug happening very rarely in Xen
     dom0 when a hypercall buffer from user land was not accessible by
     the hypervisor for very short periods of time due to e.g. page
     migration or compaction

   - usage of EXPORT_SYMBOL_GPL() instead of EXPORT_SYMBOL() in a
     Xen-related driver (no breakage possible as using those symbols
     without others already exported via EXPORT-SYMBOL_GPL() wouldn't
     make any sense)

   - a simplification for Xen PVH or Xen ARM guests

   - some additional error handling for callers of xenbus_printf()"

* tag 'for-linus-4.18-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen: Remove unnecessary BUG_ON from __unbind_from_irq()
  xen: add new hypercall buffer mapping device
  xen/scsiback: add error handling for xenbus_printf
  scsi: xen-scsifront: add error handling for xenbus_printf
  xen/grant-table: Export gnttab_{alloc|free}_pages as GPL
  xen: add error handling for xenbus_printf
  xen: share start flags between PV and PVH
2018-06-23 20:44:11 +08:00
Kirill A. Shutemov 2458e53ff7 x86/mm: Fix 'no5lvl' handling
early_identify_cpu() has to use early version of pgtable_l5_enabled()
that doesn't rely on cpu_feature_enabled().

Defining USE_EARLY_PGTABLE_L5 before all includes does the trick.

I lost the define in one of reworks of the original patch.

Fixes: 372fddf709 ("x86/mm: Introduce the 'no5lvl' kernel parameter")
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: https://lkml.kernel.org/r/20180622220841.54135-3-kirill.shutemov@linux.intel.com
2018-06-23 14:20:37 +02:00
Kirill A. Shutemov 51be133515 Revert "x86/mm: Mark __pgtable_l5_enabled __initdata"
This reverts commit e4e961e36f.

We need to use early version of pgtable_l5_enabled() in
early_identify_cpu() as this code runs before cpu_feature_enabled() is
usable.

But it leads to section mismatch:

cpu_init()
  load_mm_ldt()
    ldt_slot_va()
      LDT_BASE_ADDR
        LDT_PGD_ENTRY
	  pgtable_l5_enabled()
	    __pgtable_l5_enabled

__pgtable_l5_enabled marked as __initdata, but cpu_init() is not __init.

It's fixable: early code can be isolated into a separate translation unit,
but such change collides with other work in the area.  That's too much
hassle to save 4 bytes of memory.

Return __pgtable_l5_enabled back to be __ro_after_init.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: https://lkml.kernel.org/r/20180622220841.54135-2-kirill.shutemov@linux.intel.com
2018-06-23 14:20:37 +02:00
Breno Leitao b2f82565f2 powerpc: Wire up io_pgetevents
Wire up io_pgetevents system call on powerpc.

io_pgetevents is a new syscall to read asynchronous I/O events from the
completion queue.

Tested with libaio branch aio-poll[1] and the io_pgetevents test (#22) passed
on both ppc64 LE and BE modes.

[1] https://pagure.io/libaio/branch/aio-poll

CC: Christoph Hellwig <hch@lst.de>
Signed-off-by: Breno Leitao <leitao@debian.org>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-06-23 21:43:21 +10:00
Rob Herring 6b4154a655 arm64: dts: msm8916: fix Coresight ETF graph connections
The ETF input should be connected to the funnel output, and the ETF
output should be connected to the replicator input. The labels are wrong
and these got swapped:

Warning (graph_endpoint): /soc/funnel@821000/ports/port@8/endpoint: graph connection to node '/soc/etf@825000/ports/port@1/endpoint' is not bidirectional
Warning (graph_endpoint): /soc/replicator@824000/ports/port@2/endpoint: graph connection to node '/soc/etf@825000/ports/port@0/endpoint' is not bidirectional

Fixes: 7c10da3736 ("arm64: dts: qcom: Add msm8916 CoreSight components")
Cc: Ivan T. Ivanov <ivan.ivanov@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Andy Gross <andy.gross@linaro.org>
Cc: David Brown <david.brown@linaro.org>
Cc: linux-arm-msm@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-06-23 00:00:05 -05:00
Srinivas Kandagatla 1ebb2709ba arm64: dts: apq8096-db820c: disable uart0 by default
Access to UART0 is disabled by bootloaders. By leaving it enabled by
default would reboot the board.
Disable this for now, this would alteast give a board which boots.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-06-22 23:59:04 -05:00
Cong Wang 35b42da69e net_sched: remove a bogus warning in hfsc
In update_vf():

  cftree_remove(cl);
  update_cfmin(cl->cl_parent);

the cl_cfmin of cl->cl_parent is intentionally updated to 0
when that parent only has one child. And if this parent is
root qdisc, we could end up, in hfsc_schedule_watchdog(),
that we can't decide the next schedule time for qdisc watchdog.
But it seems safe that we can just skip it, as this watchdog is
not always scheduled anyway.

Thanks to Marco for testing all the cases, nothing is broken.

Reported-by: Marco Berizzi <pupilla@libero.it>
Tested-by: Marco Berizzi <pupilla@libero.it>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-23 10:58:46 +09:00
David S. Miller 2ca4eb8574 Merge branch 'dccp-fixes-around-rx_tstamp_last_feedback'
Eric Dumazet says:

====================
net: dccp: fixes around rx_tstamp_last_feedback

This patch series fix some issues with rx_tstamp_last_feedback.

- Switch to monotonic clock.
- Avoid potential overflows on fast hosts/networks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-23 10:46:44 +09:00
Eric Dumazet 0ce4e70ff0 net: dccp: switch rx_tstamp_last_feedback to monotonic clock
To compute delays, better not use time of the day which can
be changed by admins or malicious programs.

Also change ccid3_first_li() to use s64 type for delta variable
to avoid potential overflows.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Cc: dccp@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-23 10:46:44 +09:00
Eric Dumazet 74174fe563 net: dccp: avoid crash in ccid3_hc_rx_send_feedback()
On fast hosts or malicious bots, we trigger a DCCP_BUG() which
seems excessive.

syzbot reported :

BUG: delta (-6195) <= 0 at net/dccp/ccids/ccid3.c:628/ccid3_hc_rx_send_feedback()
CPU: 1 PID: 18 Comm: ksoftirqd/1 Not tainted 4.18.0-rc1+ #112
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 ccid3_hc_rx_send_feedback net/dccp/ccids/ccid3.c:628 [inline]
 ccid3_hc_rx_packet_recv.cold.16+0x38/0x71 net/dccp/ccids/ccid3.c:793
 ccid_hc_rx_packet_recv net/dccp/ccid.h:185 [inline]
 dccp_deliver_input_to_ccids+0xf0/0x280 net/dccp/input.c:180
 dccp_rcv_established+0x87/0xb0 net/dccp/input.c:378
 dccp_v4_do_rcv+0x153/0x180 net/dccp/ipv4.c:654
 sk_backlog_rcv include/net/sock.h:914 [inline]
 __sk_receive_skb+0x3ba/0xd80 net/core/sock.c:517
 dccp_v4_rcv+0x10f9/0x1f58 net/dccp/ipv4.c:875
 ip_local_deliver_finish+0x2eb/0xda0 net/ipv4/ip_input.c:215
 NF_HOOK include/linux/netfilter.h:287 [inline]
 ip_local_deliver+0x1e9/0x750 net/ipv4/ip_input.c:256
 dst_input include/net/dst.h:450 [inline]
 ip_rcv_finish+0x823/0x2220 net/ipv4/ip_input.c:396
 NF_HOOK include/linux/netfilter.h:287 [inline]
 ip_rcv+0xa18/0x1284 net/ipv4/ip_input.c:492
 __netif_receive_skb_core+0x2488/0x3680 net/core/dev.c:4628
 __netif_receive_skb+0x2c/0x1e0 net/core/dev.c:4693
 process_backlog+0x219/0x760 net/core/dev.c:5373
 napi_poll net/core/dev.c:5771 [inline]
 net_rx_action+0x7da/0x1980 net/core/dev.c:5837
 __do_softirq+0x2e8/0xb17 kernel/softirq.c:284
 run_ksoftirqd+0x86/0x100 kernel/softirq.c:645
 smpboot_thread_fn+0x417/0x870 kernel/smpboot.c:164
 kthread+0x345/0x410 kernel/kthread.c:240
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Cc: dccp@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-23 10:46:43 +09:00
Casey Schaufler 7b4e88434c Smack: Mark inode instant in smack_task_to_inode
Smack: Mark inode instant in smack_task_to_inode

/proc clean-up in commit 1bbc55131e
resulted in smack_task_to_inode() being called before smack_d_instantiate.
This resulted in the smk_inode value being ignored, even while present
for files in /proc/self. Marking the inode as instant here fixes that.

Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
2018-06-23 10:45:56 +09:00
Geert Uytterhoeven e020797b7d net: Remove depends on HAS_DMA in case of platform dependency
Remove dependencies on HAS_DMA where a Kconfig symbol depends on another
symbol that implies HAS_DMA, and, optionally, on "|| COMPILE_TEST".
In most cases this other symbol is an architecture or platform specific
symbol, or PCI.

Generic symbols and drivers without platform dependencies keep their
dependencies on HAS_DMA, to prevent compiling subsystems or drivers that
cannot work anyway.

This simplifies the dependencies, and allows to improve compile-testing.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-23 10:44:30 +09:00
Geert Uytterhoeven 935c5e3eaf MAINTAINERS: Add file patterns for dsa device tree bindings
Submitters of device tree binding documentation may forget to CC
the subsystem maintainer if this is missing.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-23 10:43:00 +09:00
Antoine Tenart c2cd650b5b net: mscc: make sparse happy
This patch fixes a sparse warning about using an incorrect type in
argument 2 of ocelot_write_rix(), as an u32 was expected but a __be32
was given. The conversion to u32 is forced, which is safe as the value
will be written as-is in the hardware without any modification.

Fixes: 08d02364b1 ("net: mscc: fix the injection header")
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-23 10:42:02 +09:00
Antoine Tenart 271f7ff5aa net: mvneta: fix the Rx desc DMA address in the Rx path
When using s/w buffer management, buffers are allocated and DMA mapped.
When doing so on an arm64 platform, an offset correction is applied on
the DMA address, before storing it in an Rx descriptor. The issue is
this DMA address is then used later in the Rx path without removing the
offset correction. Thus the DMA address is wrong, which can led to
various issues.

This patch fixes this by removing the offset correction from the DMA
address retrieved from the Rx descriptor before using it in the Rx path.

Fixes: 8d5047cf9c ("net: mvneta: Convert to be 64 bits compatible")
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-23 10:40:15 +09:00
Tobin C. Harding 805f16a5f1 Documentation: e1000: Fix docs build error
Recent patch updated e1000 docs to rst format.  Docs build (`make
htmldocs`) is currently failing due to this file with error:

        (SEVERE/4) Unexpected section title.

This is because a section of the file is indented 2 spaces.  Build error
can be cleared by aligning the text with column 0.  While we are changing
these lines we can make sure line length does not exceed 72, that
newlines following headings are uniform, and that full stops are
followed by two spaces.

Align text with column 0, limit line length to 72, ensure two spaces
follow all full stops, ensure uniform use of newlines after heading.

Fixes commit (228046e761 Documentation: e1000: Update kernel documentation)

CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-23 10:37:37 +09:00
Tobin C. Harding 3b0c3ebe2a Documentation: e100: Fix docs build error
Recent patch updated e100 docs to rst format.  Docs build (`make
htmldocs`) is currently failing due to this file with error:

	(SEVERE/4) Unexpected section title.

This is because a section of the file is indented 2 spaces.  Build error
can be cleared by aligning the text with column 0.  While we are changing
these lines we can make sure line length does not exceed 72, that
newlines following headings are uniform, and that full stops are
followed by two spaces.

Align text with column 0, limit line length to 72, ensure two spaces
follow all full stops, ensure uniform use of newlines after heading.

Fixes commit (85d63445f4 Documentation: e100: Update the Intel 10/100 driver doc)

CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-23 10:37:37 +09:00
Tobin C. Harding 3be40e5476 Documentation: e1000: Use correct heading adornment
Recently documentation file was converted to rst.  The document title
has the incorrect heading adornment.  From kernel docs:

	* Please stick to this order of heading adornments:

	  1. ``=`` with overline for document title::

	       ==============
	       Document title
	       ==============

Add  overline heading adornment to document title.

Fixes commit (228046e761 Documentation: e1000: Update kernel documentation)

CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-23 10:37:37 +09:00
Tobin C. Harding 32e6996ca6 Documentation: e100: Use correct heading adornment
Recently documentation file was converted to rst.  The document title
has the incorrect heading adornment.  From kernel docs:

	* Please stick to this order of heading adornments:

	  1. ``=`` with overline for document title::

	       ==============
	       Document title
	       ==============

Add  overline heading adornment to document title.

Fixes commit (85d63445f4 Documentation: e100: Update the Intel 10/100 driver doc)

CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-23 10:37:37 +09:00
Hangbin Liu 6c6da92808 ipv6: mcast: fix unsolicited report interval after receiving querys
After recieving MLD querys, we update idev->mc_maxdelay with max_delay
from query header. This make the later unsolicited reports have the same
interval with mc_maxdelay, which means we may send unsolicited reports with
long interval time instead of default configured interval time.

Also as we will not call ipv6_mc_reset() after device up. This issue will
be there even after leave the group and join other groups.

Fixes: fc4eba58b4 ("ipv6: make unsolicited report intervals configurable for mld")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-23 10:27:45 +09:00
Jason Wang b8f1f65882 vhost_net: validate sock before trying to put its fd
Sock will be NULL if we pass -1 to vhost_net_set_backend(), but when
we meet errors during ubuf allocation, the code does not check for
NULL before calling sockfd_put(), this will lead NULL
dereferencing. Fixing by checking sock pointer before.

Fixes: bab632d69e ("vhost: vhost TX zero-copy support")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-23 10:23:49 +09:00
Michel Dänzer 38e624a18f drm/amdgpu: GPU vs CPU page size fixes in amdgpu_vm_bo_split_mapping
start / last / max_entries are numbers of GPU pages, pfn / count are
numbers of CPU pages. Convert between them accordingly.

Fixes badness on systems with > 4K page size.

Cc: stable@vger.kernel.org
Bugzilla: https://bugs.freedesktop.org/106258
Reported-by: Matt Corallo <freedesktop@bluematt.me>
Tested-by: foxbat@ruin.net
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-06-22 14:57:17 -05:00
Lyude Paul fe2a196529 drm/amdgpu: Count disabled CRTCs in commit tail earlier
This fixes a regression I accidentally reduced that was picked up by
kasan, where we were checking the CRTC atomic states after DRM's helpers
had already freed them. Example:

==================================================================
BUG: KASAN: use-after-free in amdgpu_dm_atomic_commit_tail.cold.50+0x13d/0x15a [amdgpu]
Read of size 1 at addr ffff8803a697b071 by task kworker/u16:0/7

CPU: 7 PID: 7 Comm: kworker/u16:0 Tainted: G           O      4.18.0-rc1Lyude-Upstream+ #1
Hardware name: HP HP ZBook 15 G4/8275, BIOS P70 Ver. 01.21 05/02/2018
Workqueue: events_unbound commit_work [drm_kms_helper]
Call Trace:
 dump_stack+0xc1/0x169
 ? dump_stack_print_info.cold.1+0x42/0x42
 ? kmsg_dump_rewind_nolock+0xd9/0xd9
 ? printk+0x9f/0xc5
 ? amdgpu_dm_atomic_commit_tail.cold.50+0x13d/0x15a [amdgpu]
 print_address_description+0x6c/0x23c
 ? amdgpu_dm_atomic_commit_tail.cold.50+0x13d/0x15a [amdgpu]
 kasan_report.cold.6+0x241/0x2fd
 amdgpu_dm_atomic_commit_tail.cold.50+0x13d/0x15a [amdgpu]
 ? commit_planes_to_stream.constprop.45+0x13b0/0x13b0 [amdgpu]
 ? cpu_load_update_active+0x290/0x290
 ? finish_task_switch+0x2bd/0x840
 ? __switch_to_asm+0x34/0x70
 ? read_word_at_a_time+0xe/0x20
 ? strscpy+0x14b/0x460
 ? drm_atomic_helper_wait_for_dependencies+0x47d/0x7e0 [drm_kms_helper]
 commit_tail+0x96/0xe0 [drm_kms_helper]
 process_one_work+0x88a/0x1360
 ? create_worker+0x540/0x540
 ? __sched_text_start+0x8/0x8
 ? move_queued_task+0x760/0x760
 ? call_rcu_sched+0x20/0x20
 ? vsnprintf+0xcda/0x1350
 ? wait_woken+0x1c0/0x1c0
 ? mutex_unlock+0x1d/0x40
 ? init_timer_key+0x190/0x230
 ? schedule+0xea/0x390
 ? __schedule+0x1ea0/0x1ea0
 ? need_to_create_worker+0xe4/0x210
 ? init_worker_pool+0x700/0x700
 ? try_to_del_timer_sync+0xbf/0x110
 ? del_timer+0x120/0x120
 ? __mutex_lock_slowpath+0x10/0x10
 worker_thread+0x196/0x11f0
 ? flush_rcu_work+0x50/0x50
 ? __switch_to_asm+0x34/0x70
 ? __switch_to_asm+0x34/0x70
 ? __switch_to_asm+0x40/0x70
 ? __switch_to_asm+0x34/0x70
 ? __switch_to_asm+0x40/0x70
 ? __switch_to_asm+0x34/0x70
 ? __switch_to_asm+0x40/0x70
 ? __schedule+0x7d6/0x1ea0
 ? migrate_swap_stop+0x850/0x880
 ? __sched_text_start+0x8/0x8
 ? save_stack+0x8c/0xb0
 ? kasan_kmalloc+0xbf/0xe0
 ? kmem_cache_alloc_trace+0xe4/0x190
 ? kthread+0x98/0x390
 ? ret_from_fork+0x35/0x40
 ? ret_from_fork+0x35/0x40
 ? deactivate_slab.isra.67+0x3c4/0x5c0
 ? kthread+0x98/0x390
 ? kthread+0x98/0x390
 ? set_track+0x76/0x120
 ? schedule+0xea/0x390
 ? __schedule+0x1ea0/0x1ea0
 ? wait_woken+0x1c0/0x1c0
 ? kasan_unpoison_shadow+0x30/0x40
 ? parse_args.cold.15+0x17a/0x17a
 ? flush_rcu_work+0x50/0x50
 kthread+0x2d4/0x390
 ? kthread_create_worker_on_cpu+0xc0/0xc0
 ret_from_fork+0x35/0x40

Allocated by task 1124:
 kasan_kmalloc+0xbf/0xe0
 kmem_cache_alloc_trace+0xe4/0x190
 dm_crtc_duplicate_state+0x78/0x130 [amdgpu]
 drm_atomic_get_crtc_state+0x147/0x410 [drm]
 page_flip_common+0x57/0x230 [drm_kms_helper]
 drm_atomic_helper_page_flip+0xa6/0x110 [drm_kms_helper]
 drm_mode_page_flip_ioctl+0xc4b/0x10a0 [drm]
 drm_ioctl_kernel+0x1d4/0x260 [drm]
 drm_ioctl+0x433/0x920 [drm]
 amdgpu_drm_ioctl+0x11d/0x290 [amdgpu]
 do_vfs_ioctl+0x1a1/0x13d0
 ksys_ioctl+0x60/0x90
 __x64_sys_ioctl+0x6f/0xb0
 do_syscall_64+0x147/0x440
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Freed by task 1124:
 __kasan_slab_free+0x12e/0x180
 kfree+0x92/0x1a0
 drm_atomic_state_default_clear+0x315/0xc40 [drm]
 __drm_atomic_state_free+0x35/0xd0 [drm]
 drm_atomic_helper_update_plane+0xac/0x350 [drm_kms_helper]
 __setplane_internal+0x2d6/0x840 [drm]
 drm_mode_cursor_universal+0x41e/0xbe0 [drm]
 drm_mode_cursor_common+0x49f/0x880 [drm]
 drm_mode_cursor_ioctl+0xd8/0x130 [drm]
 drm_ioctl_kernel+0x1d4/0x260 [drm]
 drm_ioctl+0x433/0x920 [drm]
 amdgpu_drm_ioctl+0x11d/0x290 [amdgpu]
 do_vfs_ioctl+0x1a1/0x13d0
 ksys_ioctl+0x60/0x90
 __x64_sys_ioctl+0x6f/0xb0
 do_syscall_64+0x147/0x440
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

The buggy address belongs to the object at ffff8803a697b068
 which belongs to the cache kmalloc-1024 of size 1024
The buggy address is located 9 bytes inside of
 1024-byte region [ffff8803a697b068, ffff8803a697b468)
The buggy address belongs to the page:
page:ffffea000e9a5e00 count:1 mapcount:0 mapping:ffff88041e00efc0 index:0x0 compound_mapcount: 0
flags: 0x8000000000008100(slab|head)
raw: 8000000000008100 ffffea000ecbc208 ffff88041e000c70 ffff88041e00efc0
raw: 0000000000000000 0000000000170017 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8803a697af00: fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8803a697af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8803a697b000: fc fc fc fc fc fc fc fc fc fc fc fc fc fb fb fb
                                                             ^
 ffff8803a697b080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8803a697b100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

So, we fix this by counting the number of CRTCs this atomic commit disabled
early on in the function before their atomic states have been freed, then use
that count later to do the appropriate number of RPM puts at the end of the
function.

Acked-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Cc: stable@vger.kernel.org
Fixes: 97028037a3 ("drm/amdgpu: Grab/put runtime PM references in atomic_commit_tail()")
Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: Michel Dänzer <michel@daenzer.net>
Reported-by: Michel Dänzer <michel@daenzer.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-06-22 14:55:25 -05:00
Suravee Suthikulpanit 964d978433 x86/CPU/AMD: Fix LLC ID bit-shift calculation
The current logic incorrectly calculates the LLC ID from the APIC ID.

Unless specified otherwise, the LLC ID should be calculated by removing
the Core and Thread ID bits from the least significant end of the APIC
ID. For more info, see "ApicId Enumeration Requirements" in any Fam17h
PPR document.

[ bp: Improve commit message. ]

Fixes: 68091ee7ac ("Calculate last level cache ID from number of sharing threads")
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1528915390-30533-1-git-send-email-suravee.suthikulpanit@amd.com
2018-06-22 21:21:49 +02:00
Thomas Gleixner 7731b8bc94 Merge branch 'linus' into x86/urgent
Required to queue a dependent fix.
2018-06-22 21:20:35 +02:00
Arnd Bergmann f2ccaa5904 dm raid: don't use 'const' in function return
A newly introduced function has 'const int' as the return type,
but as "make W=1" reports, that has no meaning:

drivers/md/dm-raid.c:510:18: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers]

This changes the return type to plain 'int'.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 33e53f0685 ("dm raid: introduce extended superblock and new raid types to support takeover/reshaping")
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Fixes: 552aa679f2 ("dm raid: use rs_is_raid*()")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2018-06-22 14:51:12 -04:00
Bart Van Assche 2d0b2d64d3 dm zoned: avoid triggering reclaim from inside dmz_map()
This patch avoids that lockdep reports the following:

======================================================
WARNING: possible circular locking dependency detected
4.18.0-rc1 #62 Not tainted
------------------------------------------------------
kswapd0/84 is trying to acquire lock:
00000000c313516d (&xfs_nondir_ilock_class){++++}, at: xfs_free_eofblocks+0xa2/0x1e0

but task is already holding lock:
00000000591c83ae (fs_reclaim){+.+.}, at: __fs_reclaim_acquire+0x5/0x30

which lock already depends on the new lock.

the existing dependency chain (in reverse order) is:

-> #2 (fs_reclaim){+.+.}:
  kmem_cache_alloc+0x2c/0x2b0
  radix_tree_node_alloc.constprop.19+0x3d/0xc0
  __radix_tree_create+0x161/0x1c0
  __radix_tree_insert+0x45/0x210
  dmz_map+0x245/0x2d0 [dm_zoned]
  __map_bio+0x40/0x260
  __split_and_process_non_flush+0x116/0x220
  __split_and_process_bio+0x81/0x180
  __dm_make_request.isra.32+0x5a/0x100
  generic_make_request+0x36e/0x690
  submit_bio+0x6c/0x140
  mpage_readpages+0x19e/0x1f0
  read_pages+0x6d/0x1b0
  __do_page_cache_readahead+0x21b/0x2d0
  force_page_cache_readahead+0xc4/0x100
  generic_file_read_iter+0x7c6/0xd20
  __vfs_read+0x102/0x180
  vfs_read+0x9b/0x140
  ksys_read+0x55/0xc0
  do_syscall_64+0x5a/0x1f0
  entry_SYSCALL_64_after_hwframe+0x49/0xbe

-> #1 (&dmz->chunk_lock){+.+.}:
  dmz_map+0x133/0x2d0 [dm_zoned]
  __map_bio+0x40/0x260
  __split_and_process_non_flush+0x116/0x220
  __split_and_process_bio+0x81/0x180
  __dm_make_request.isra.32+0x5a/0x100
  generic_make_request+0x36e/0x690
  submit_bio+0x6c/0x140
  _xfs_buf_ioapply+0x31c/0x590
  xfs_buf_submit_wait+0x73/0x520
  xfs_buf_read_map+0x134/0x2f0
  xfs_trans_read_buf_map+0xc3/0x580
  xfs_read_agf+0xa5/0x1e0
  xfs_alloc_read_agf+0x59/0x2b0
  xfs_alloc_pagf_init+0x27/0x60
  xfs_bmap_longest_free_extent+0x43/0xb0
  xfs_bmap_btalloc_nullfb+0x7f/0xf0
  xfs_bmap_btalloc+0x428/0x7c0
  xfs_bmapi_write+0x598/0xcc0
  xfs_iomap_write_allocate+0x15a/0x330
  xfs_map_blocks+0x1cf/0x3f0
  xfs_do_writepage+0x15f/0x7b0
  write_cache_pages+0x1ca/0x540
  xfs_vm_writepages+0x65/0xa0
  do_writepages+0x48/0xf0
  __writeback_single_inode+0x58/0x730
  writeback_sb_inodes+0x249/0x5c0
  wb_writeback+0x11e/0x550
  wb_workfn+0xa3/0x670
  process_one_work+0x228/0x670
  worker_thread+0x3c/0x390
  kthread+0x11c/0x140
  ret_from_fork+0x3a/0x50

-> #0 (&xfs_nondir_ilock_class){++++}:
  down_read_nested+0x43/0x70
  xfs_free_eofblocks+0xa2/0x1e0
  xfs_fs_destroy_inode+0xac/0x270
  dispose_list+0x51/0x80
  prune_icache_sb+0x52/0x70
  super_cache_scan+0x127/0x1a0
  shrink_slab.part.47+0x1bd/0x590
  shrink_node+0x3b5/0x470
  balance_pgdat+0x158/0x3b0
  kswapd+0x1ba/0x600
  kthread+0x11c/0x140
  ret_from_fork+0x3a/0x50

other info that might help us debug this:

Chain exists of:
  &xfs_nondir_ilock_class --> &dmz->chunk_lock --> fs_reclaim

Possible unsafe locking scenario:

     CPU0                    CPU1
     ----                    ----
lock(fs_reclaim);
                             lock(&dmz->chunk_lock);
                             lock(fs_reclaim);
lock(&xfs_nondir_ilock_class);

*** DEADLOCK ***

3 locks held by kswapd0/84:
 #0: 00000000591c83ae (fs_reclaim){+.+.}, at: __fs_reclaim_acquire+0x5/0x30
 #1: 000000000f8208f5 (shrinker_rwsem){++++}, at: shrink_slab.part.47+0x3f/0x590
 #2: 00000000cacefa54 (&type->s_umount_key#43){.+.+}, at: trylock_super+0x16/0x50

stack backtrace:
CPU: 7 PID: 84 Comm: kswapd0 Not tainted 4.18.0-rc1 #62
Hardware name: Supermicro Super Server/X10SRL-F, BIOS 2.0 12/17/2015
Call Trace:
 dump_stack+0x85/0xcb
 print_circular_bug.isra.36+0x1ce/0x1db
 __lock_acquire+0x124e/0x1310
 lock_acquire+0x9f/0x1f0
 down_read_nested+0x43/0x70
 xfs_free_eofblocks+0xa2/0x1e0
 xfs_fs_destroy_inode+0xac/0x270
 dispose_list+0x51/0x80
 prune_icache_sb+0x52/0x70
 super_cache_scan+0x127/0x1a0
 shrink_slab.part.47+0x1bd/0x590
 shrink_node+0x3b5/0x470
 balance_pgdat+0x158/0x3b0
 kswapd+0x1ba/0x600
 kthread+0x11c/0x140
 ret_from_fork+0x3a/0x50

Reported-by: Masato Suzuki <masato.suzuki@wdc.com>
Fixes: 4218a95546 ("dm zoned: use GFP_NOIO in I/O path")
Cc: <stable@vger.kernel.org>
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2018-06-22 14:51:12 -04:00
Kees Cook 50a7d3ba7c dm writecache: use 2-factor allocator arguments
This adjusts the allocator calls to use the 2-factor argument style, as
already done treewide for better defense against allocator overflows.

Signed-off-by: Kees Cook <keescook@chromium.org>
[snitzer: tweaked code to leave assignment in a test alone]
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2018-06-22 14:51:12 -04:00